Stelio MontebugnoliBEST4th SKADS Workshop, Lisbon, 2-3 October 2008

S.Montebgnoli

IRA -INAF-

Bologna –Italy-

4th SKADS Workshop, Lisbon, 2-3 October 2008

Stelio MontebugnoliBEST4th SKADS Workshop, Lisbon, 2-3 October 2008

DS-6 T1 Deliverables: 1- Analogue (T0+12mo) and/or digital optical links (T0+21mo).2- Architecture and technology for immediate application on the BEST - x demonstrator construction (T0+10mo).

Project DS6 - T1: Design Develop and Demonstrate

Sub - Systems

End Best - 1 Construction

Best - 2 Construction

Best - 3 Construction

Analog and / or digital optical links

Year 4Qtr 1 Qtr 2 Qtr 3 Qtr 4Qtr 4

Year 2Qtr 1 Qtr 2 Qtr 3 Qtr 4

Year 3Qtr 1 Qtr 2 Qtr 3

Year 1Qtr 1 Qtr 2 Qtr 3 Qtr 4

Architecture and technology for immediate application onthe BEST - x demonstrator construction

Stelio MontebugnoliBEST4th SKADS Workshop, Lisbon, 2-3 October 2008

1- Analogue (T0+12mo) and/or digital optical links (T0+21mo). (Done)

Optical Tx

Analog Link

Optical RX

BEST-2 IF

Stelio MontebugnoliBEST4th SKADS Workshop, Lisbon, 2-3 October 2008

Low Noise balanced Amplifier

IF Amplifier

2- Architecture and technology for immediate application on the BEST - x demonstrator construction (T0+10mo). (Done)

Optical linkFront End

A/D

Stelio MontebugnoliBEST4th SKADS Workshop, Lisbon, 2-3 October 2008

DS-6 T2 Deliverables: 1. front ends to the receiver room (T0+12mo).2. Immediately ready and easily replicable electronic (T0+12mo).3. Local oscillator and sync. distribution in large infrastructures/arrays (T+38mo).4. Wide band and high dynamic range Data Acquisition System (T+39mo).5. 2 GHz analogue optical link (already used in BEST-1 and planned for BEST-2, -36.Tested adaptive beamforming and RFI Mitigation algorithms (T0+39mo).

Project DS6 - T2: Develop and Demonstrate BEST

End Best - 1 Construction

Best - 2 Construction

Best - 3 Construction

Immediately ready and easily replicable electronic

Wide band high dynamic range Data Acquisition System

Software Beamforming

Year 4Qtr 1 Qtr 2 Qtr 3 Qtr 4Qtr 4

Year 2Qtr 1 Qtr 2 Qtr 3 Qtr 4

Year 3Qtr 1 Qtr 2 Qtr 3

Year 1Qtr 1 Qtr 2 Qtr 3 Qtr 4

IRA - TEKMAR 2GHz analog optical link (already used inBEST-1 and planned for BEST-2, -3 from the front-endsto the receivers room) and digital link

Local oscillator and sync distribution in largeinfrastructure / arrays

Tested adaptive beamforming and RFI mitigationalgorithms

Stelio MontebugnoliBEST4th SKADS Workshop, Lisbon, 2-3 October 2008

LNA

Front endEasily replicable electronic Sync distribution

LO distributionOptical FiberFX correlator

DS-6 T2 Deliverables:.. 1,2,3,4,5, .in practice.

Stelio MontebugnoliBEST4th SKADS Workshop, Lisbon, 2-3 October 2008

X =

Dim. NxT

T

t

R̂

using Cholesky Decomp.

1ˆ R

0d̂

=0

10

01

ˆˆˆ

ˆˆ

dRd

dRH

wRx

n° samples per Rx

A/D A/D A/D

1 2 N

1w

2w

Nw

Final version will be programmed on the Bee 2 engine

6.Tested adaptive beamforming and RFI Mitigation algorithms (T0+39mo)

Simulation level. Not jet implemented .It will be the next step pf the Bee2 programming.

(Not completely Done).

Stelio MontebugnoliBEST4th SKADS Workshop, Lisbon, 2-3 October 2008

DS-6 T3 Deliverables: 1.Simulation Software for sensor array (T0 + 36 months)2.Methodology to compare expected results with the simulated ones (T0 + 39 months)

Project DS6 - T3: Assessment of performances

End Best - 1 Construction

Best - 2 Construction

Best - 3 Construction

Simulation software for sensor arrayMethodology to compare expected results with thesimulated onesComparison of performances with the SKAMPdemonstrator

Year 1Qtr 1 Qtr 2 Qtr 3 Qtr 4 Qtr 4

Year 2Qtr 1 Qtr 2 Qtr 3 Qtr 4

Year 3Qtr 1 Qtr 2 Qtr 3

Year 4Qtr 1 Qtr 2 Qtr 3 Qtr 4

Stelio MontebugnoliBEST4th SKADS Workshop, Lisbon, 2-3 October 2008

1. Simulation Software for sensor array (T0 + 36 months)

UV-plane coverage analysis for the BEST project(SKA-DS) INAF-IRA Technical Report #417/08

E. Carretti1, D. Dallacasa1, 2

1-INAF–IRA, Via Gobetti 101, I-40129 Bologna, Italy2-Università di Bologna, Astronomy Dep., Via Ranzani 1, I-40126 Bologna, Italy

(Partially done)

Stelio MontebugnoliBEST4th SKADS Workshop, Lisbon, 2-3 October 2008

DS6-T3: Assessment of Performace

BEST-1: Pn obtained with . GRASP

0,0,2

0 0 0

0,0,2

; , ; , sin

; , ,; , sin

n b

ant

n

P T d d

TP d d

= 86.3 K

1 0.045 2100 94.5sys BEST eqT G Flux K Jy Jy K

261

110 0.045

2g

BEST

A K KG

k Jy Jy

F=408 MHz

2. Methodology to compare expected results with the simulated ones (T0 + 39 months) (Partially done)

Computed TSYSComputed TSYS

Measured TSYS

Stelio MontebugnoliBEST4th SKADS Workshop, Lisbon, 2-3 October 2008

DS-4 Deliverables: (to be focused with J.G. Bij de Vaate and Laurens Bakker)

Kick off meeting in Medicina (Bologna) on April 2008 (BdeV)

Stelio MontebugnoliBEST4th SKADS Workshop, Lisbon, 2-3 October 2008

FIFO

Coarse TimeDelay

AD

DDC Resc.

DelayCTRL

Intellig.RFI

HandlingFFT-1

Calibration/FFT Phase LUT

Delay & RFI control

PFB

Adaptive Beamf. Control

Adapt.Beamf.

RX 1 I

m1

i

m

RX i

RX

m

Fringes (f)

k

Beam 1

Beam i

I

Beam k

Rxi Calibration

Adaptive/multibeaming

Calibration, Direct Pixeling, FX Correlation Calibration, Digital Adaptive beamforming (linked with DS3-T2 & DS 4 T3 and T5)

4 (bits)F

X

FX corelatorRxi spectrum

Rxi

Block diagram (Deliverables)

Stelio MontebugnoliBEST4th SKADS Workshop, Lisbon, 2-3 October 2008